Hey here is my setup:
Hyperion.NG is installed on Raspi3b
> Raspi3b is communicating with lightberry usb box
> lightberry usb is managing the leds
> Android grabber is installed on TV. Until this step, everything is working.
>> firestick 4k is connected on tv by hdmi.
>> Android grabber installed on TV is not grabbing the screen from the firestick unless
>> Android grabber installed on firestick, everything is working.